If a -hp motor is required by a ventilating fan to produce
Chapter 5, Problem 5.128(choose chapter or problem)
If a \(\frac{3}{4}\)-hp motor is required by a ventilating fan to produce a 24-in. stream of air having a velocity of 40 ft/s as shown in Fig. P5.128, estimate (a) the efficiency of the fan and (b) the thrust of the supporting member on the conduit enclosing the fan.
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